Machine for cutting holes in paper boxes.



Patented Mar. 6, I900. C. BECK, In. MACHINE FOR CUTTING HOLES IN PAPERBOXES.

(.No Model.)

(Application filed May 11, 1899.)

2 Sheets-Sheet INVENTOR CharZesBec7 J7".

No. 644,570. I Patented Mar. 6, I900. c. BECK, 1R. MACHINE FOR CUT "NBHOLES IN PAPER BOXES.

(Application filed May 11, 1899.)

2 Sheets$heet 2.

(No Model.)

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PATENT MACHINE FOR CUTTING HOLES IN PAPER BOXES.

SPECIFICATION part of Letters Patent No. 644,570, dated March 6, 1906.Application filed May 11,1899. Serial No. 716,411. (No model.)

To all whom it may concern:

Be it known that I, CHARLES BECK, J r., a citizen of the United States,residing at Philadelphia, in the county of Philadelphia and State ofPennsylvania, have invented certain new and useful Improvements inMachines for Cutting Thumb-Holes in the Lids of Paper Boxes, of whichthe following is a specification.

My invention is in the nature of a machine for cutting thumb holes ornotches in the edges of the lids of paper boxes in that class ofpaper-box work where the lids are as deep as the boxes, such notches(which in the trade are termed thumb-holes) affording opportunity forgrasping the box with the thumb and a finger of one hand while the lidis removed with the other hand.

The object of the present invention is to generally improve theconstruction and operation of this class of machines by simplifying andcheapening the several parts; and with this object in View my inventionconsists in the improved construction, arrangement, and combination ofparts hereinafter fully described and afterward specifically pointed outin the appended claims.

In the accompanying drawings, Figure 1 is perspective view of a machineconstructed in accordance with my invention with the table removed, theoutline of the table being indicated in dotted lines. Fig. 2 is a view,partly in elevation and partly in section, of the head or upper part ofthe machine, the legs and treadle-rods being broken away and the tableremoved. Fig. 3 is a view of the upper part of the machine in endelevation, looking at the right-hand end. Fig. 4 is a top plan View ofthe central part of the machine with table in position and a box-lid inplace to be cut, the lid being shown with its top removed and the outerparts of the table and cutter-heads being broken away. Fig. 5 is a viewin face elevation of a cutter-head removed from the machine. Fig. 6 is asimilar view showing a different form of die and punch. Fig. 7 is asimilar view with the dieremoved. Fig. 8 is a fragmentary detailsectional view on the plane indicated by the dotted line 8 8 of Fig. 3.Fig. 9 is a detail perspective view illustrating the table detached,looking at the under side.

tudinal dovetail groove extending entirely through it. The central partof this casting 16 is cut away at 17 to lighten it and afford more readyaccess to the interior parts.

In the dovetail groove of the casting 16 are two dovetail sliding heads18 and 19, in which are fitted the cutting-dies or punches 20 and 21,the stationary dies 22 and 23 being removably secured to the inner endsof the sliding heads and spaces 2 1 25 being left in the rear of thestationary dies and in front of the punches to receive the sides 26 27of the boxlid, as shown in Figs. 2 and 4:. The-punches are normally heldwithdrawn by springs 28 29, coiled around them, having their front endsbearing against the sliding heads and their rear ends bearing againstpins 30 31, projecting downward from the punches. The punches areimpelled forward simultaneously by means of a treadle 32, pivotallymounted on a cross-rod 33, connecting the rear legs 13 and 15, andconnected, by means of rods 34 and 35, pivotally secured to a lug 36 onthe treadle, to a horizontal bar 37, mounted to slide vertically inguides 37 on the head 16, the rods 34: and being pivotally connected attheir upper ends in lugs 38, depending from said bar. Elbow-levers 39and 40, pivoted in recesses in the under side of heads 18 and 19', havetheir upper arms bearing behind the pins 30 31 and at the ends of theirlower arms carry pins or rollers 41 42, which engage under the bar 37.By means of the construc tions described the sliding heads may be adjusted to any desired positions in the dovetail groove of head 16 andwill carry the elbow-levers with them, and no matter Where they arelocated the rollers 41 42 will always bear under bar 37, and theoperation of the treadle will cause the punches to move forward into thestationary dies without regard to the adjustment. The sliding heads aresecured at any desired adjustment by means of hand-screws l3 etlpvhichare threaded through the sliding heads and engage the bottom of thedovetail groove.

The table is composed of two sections and a6, held at a sufiicientdistance apart by cross-irons 47 to permit the sliding heads to projectthrough the space between them, the irons I? being provided with lugs 48to receive screws to fasten them to the table and with paralleldepending fingers l9, straddling clamp-screws 50, threaded into the head16 between vertical guide-ribs 51. \Vhen the table is in place, thefingers 49 are in contact with the guide-ribs 51 and rest upon ahorizontal bar 52, mounted pivotally upon the upper ends of parallelbars 53 54,pivotal1y connected at their lower ends to the frame of themachine. A spring 55 connects the bar 52 with the head 16, with a normaltendency to force it to the right against a bar-stop 56, projecting fromthe leg-frame in its path, and provided with a set-screw 57, by means ofwhich the bar 52 maybe adjusted to the left to raise its level. Inraising, the bar 52 maintains its level and carries up the fingers 49and with them both ends of the table at the same time, thus preventingendwise tipping of the table, while the contact of the fingers 49 withguide-ribs 51, maintained by clampscrews 50, prevents tipping front orback, thus securing an absolutely true and level adjustment of theheight of the table by means of the single set-screw 57.

The sliding heads 18 and 1.9 are cutaway at each side of their face endsto afford rabbets 58, in which to fit arms 59, depending from thestationary dies 22 23, said dies being secured by screws and the punchesby removable hearing-plates 61.

In the machine proper, as illustrated in detail in Figs. 2 and 5, thecutting-dies or punches 20 21 are cylindrical, with beveled forward end,and the stationary dies are of corresponding form; but the contour ofthe dies may be variedas, for instance, in Figs. 6 and 7, in which thepunch is substantially semicylindrical, with lateral flanges 62 hearingon the upper face of the sliding head. Any other shapes of dies may besubstituted and many slight changes or variations made in the details ofconstruction of the various parts without departing from the spirit andscope of my invention.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent of the United States, is-- 1. In amachine for cutting thumb-holes in the lids of paper boxes, thecombination of a casting or head having a longitudinal groove, a pair ofslidable heads in said groove, means for locking said heads at anyadjustment, a punch and stationary die carried by each head, a treadle,and connections between the punches and the treadle whereby the punchesare operated in any adjustment by the depression of the treadle,substantially as described.

2. In a machine for cutting thumb-holes in the lids of paper boxes, thecombination of a casting or head having a longitudinal groove, a pair ofslidable heads in said groove, means for locking said heads at anyadjustment, a punch and stationary die carried by each head, atreadle,anIelbow-lever for each punch having its upper arm in engagementtherewith and its lower arm provided with a laterally-projecting pin orroller, a horizontal barIresting on said pins or rollers and guided ingrooves in the frame, and a treadle connected with said horizontal bar,substantially as described.

3. In a machine for cutting thumb-holes in the lids of paper boxes, thecombination of a casting or head having a longitudinal groove, slidableheads therein, hand-screws for securing the slidable heads in anyadjustment, stationary dies fixed on the slidable heads, punchesslidably mounted in said heads, springs for retracting said punches,pins depending from the punches, elbow-levers pivoted to the slidingheads having their upper arms engaging behind said pins and their lowerends provided with laterally-projecting pins or rollers, avertically-slidable horizontal bar resting on said pins or rollers, atreadle, and rods connecting the treadle with the horizontal bar,substantially as described.

4. In a machine for cutting thumb-holes in the lids of paper boxes, thecombination of a frame, a pair of parallel bars pivoted thereto, ahorizontal arm pivotally connected to the upper ends of said bars, atable resting on said arm, a spring for drawing the arm laterally in onedirection, a stop for the arm, and a set-screw threaded through the stopand bearing against the end of the arm to move it in the oppositedirection against the action of the spring, the movement of the arm bythe spring and set-screw causing the table to be raised and lowered,substantially as described.

5. In a machine for cutting thumb-holes in the lids of paper boxes, thecombination of a frame provided with parallel vertical guide ribs ateach end, a table in two sections, crossirons secured to the table,parallel fingers depending from the cross-irons in contact with theguide-ribs, a clamping-screw passing between the parallel fingers andguide-ribs into the frame, and a vertically-adjustable horizontal armsupporting the parallel fingers, substantially as described.

6. In a machine for cutting thumb-holes in the lids of paper boxes, thecombination of a frame provided with parallel vertical guide ribs ateach end, a table in two sections, crossirons secured to the table,parallel fingers depending from said cross-irons in contact with theguide-ribs, a clamping-screw passing between the parallel fingers andguide-ribs into the frame, a pair of parallel bars pivoted to the frame,a horizontal arm pivoted to the upper ends of said bars, a springtending to draw the arm in one direction, a stop against the action ofthe spring, and a set-screw threaded through the stop and bearingagainst the end of the horizontal arm, substantially as described.

7. In a machine for cutting thumb-holes in the lids of paper boxes, thecombination of a slidable head provided with ways or bearings, a punchor cutting-die located in said Ways, a projecting end on the headleaving rabbets at the sides thereof, a stationary but removable dieprovided with depending sides located in said rabbets, screws securingthe removable dies, and a removable bearing-plate for securing the punchinits bearing, substantially as described.

8. In a machine for cutting thumb-holes inr the lids of paper boxes, thecombination of a CHARLES BECK, JR.

Witnesses:

R0121. KEATING, J12, LEONIDAS BECK.

